Ubuntu – Can’t change partition sizes using GParted

gpartedpartitioning

I'm trying to change partition sizes on a Ubuntu 14 desktop by running GParted from a USB stick. However, the partition that I want to shrink won't go below its current size. The entire drive is practically empty.

I checked related posts, but couldn't find an answer to my situation. I do understand that the key icon next to partition indicates that changes can't be made, but how exactly to fix that? Thanks!

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UPDATE: After applying GUI tool: system-config-lvm, I was able to start resizing, but GParted runs into an error.

Some free space available:
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Resize settings:
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Error:
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Best Answer

I can't explain much for LVM partition, but here's the generic steps.

I do understand that the key icon next to partition indicates that changes can't be made, but how exactly to fix that?

First, you need to unmount the LVM partition.

  1. In GParted, select or highlight the row containing /dev/sda5
  2. In the menubar, select Partition > Deactivate

GParted will rescan the partitions and the key icon will disappear.

Next, to shrink the LVM partition.

  1. In GParted, select the same row i.e. /dev/sda5 again
  2. In the menubar, select Partition > Resize/Move

A small dialog will appear, where you can resize the partition by dragging the left/right arrow in the top rectangular box representing the partition. Or, you can specify the partition size in mebibytes (MiB) by using the spinner (up-down control).

Additional steps may be required, which I don't have experience.

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